Finding the Fourth Proportional to 8,564.86, 11,815.86 and 5,375.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564.86 : 11,815.86 = 5,375.98 : x
2. Step 2: Convert to fraction form
   8,564.86/11,815.86 = 5,375.98/x
3. Step 3: Cross multiply
   8,564.86x = 11,815.86 × 5,375.98
4. Step 4: Simplify right side
   8,564.86x = 63,521,827.04
5. Step 5: Solve for x
   x = 63,521,827.04/8,564.86
6. Step 6: Final answer
   x = 7,416.56